Measuring Eating, Activity and Strength: Understanding the Response -Using Protein

Inclusion Criteria: * Age 60+ yrs. * BMI of \>30 kg/m2 * Body weight \<495 lbs. * Normal blood chemistries * Normal renal function * Primary care physician acknowledgement * Non-Vegetarian * Mild to moderate movement impairment Exclusion Criteria: * Body weight \>495 pounds. * Current smoker. * Presence of unstable, acutely symptomatic, or life-limiting illness. * Positive screen for dementia using Mini-Cog evaluation tool. * Neurological conditions causing functional or cognitive impairments. * History of significant weight instability (defined as \> 10 pounds weight gain or loss over 6 months prior to study participation). * Unwillingness or inability to be randomized to any one of two intervention groups, submit to all study testing or continuously participate in a randomly assigned lifestyle intervention program for six months. * Inability to walk independently. * Bilateral hip replacements. * Unable to give consent. * Unable to complete written recording forms including journals of eating and exercise behaviors. * Current use of the following medications: monoamine oxidase inhibitors, prescription weight loss medications. * Primary Care Physician advises against participation.